当前,在机电工业、仪器制造、国防建设和科学研究中都需要一些导磁率很低的合金钢种,对于这些材料,导磁率μ或磁化率K是必须进行测定的重要参数。目前,冲击法是典型的磁测量方法,测试精度较高,操作方便,测得数据是相当大试样的平均磁性能,数据比较稳定,我厂的双螺管弱磁材料测试设备就是用冲击法的。近年来,由于新材料研制工作的进一步发展,试样的μ值越来越低,原设备的灵敏度已不能满足新钢种测试的要求,因此,要求冲击灵敏度在现有的基础上尽可能的提高。冲击法磁测量中,有关最大灵敏度的讨论1、原理概要 At present, some kinds of alloy steel with very low magnetic permeability are needed in the electromechanical industry, equipment manufacturing, national defense construction and scientific research. For these materials, the magnetic permeability μ or magnetic susceptibility K is an important parameter that must be measured. At present, the impact method is a typical magnetic measurement method, the test accuracy is high, easy to operate, the measured data is a considerable average magnetic properties of the sample, the data is relatively stable, I plant double solenoid weak magnetic material testing equipment is the impact Method. In recent years, due to the further development of new material development, the μ value of the sample is getting lower and lower, the sensitivity of the original equipment can not meet the requirements of the test of the new type of steel. Therefore, the impact sensitivity needs to be as high as possible on the existing basis improve. Impact law magnetic measurement, the discussion of the maximum sensitivity 1, the principle of summary